Machine for inclosing metallic coiled springs



B. RISCHNEIDE R ET AL 1,861,429

MACHINE FOR INCIJOSING METALLIC COILED SPRINGS May 31, 1932.

- 5 Sheets-Sheet 1 Filed May 17, 1929 INVENTORS Bernard R. Schneider 2 ma Nu v Q N 5 a 8km g N an 3 mm m2, m NE a: 3 O .0 1 J I l 1 N. 3 U. Q\ am m@ Nw mm. H 8 3 H c. 2 me. o: @E :6 F h v aw i: fi y. f Ii Q I 0 5 mm9 2 A r Q I V mm x m Q0 we gm 2 .9 Q m 5. Q E Q m0 J 8 x 2 a rr N \h 0%May 31, 1932.

B. R. SCHNEIDER ET AL MACHINE FOR INCLOSING METALLIC COILED SPRINGSFiled May 17, 192 9 5.Sheets-Sheet 2 ser INVENTOR5 Bernard R schnelder WA TORNEY.

y 1932- B. R. SCHNEIDER ET AL ,86 ,4 9

MACHINE FOR INCLOSING METALLIC COILBD SPRINGS Filed May 17, 1929 5Sheets-Sheet 3 INVENTORS Bernard RSchneider By K rl iser I L W lATTORNEY.

May 31, 1932.- B. R. SCHNEIDER ET AL 7 1,861,429

I MACHINE FOR INCLOSING METALLIC COILED SPRINGS Filed May 17, 1929 5Sheets-Sheet 4 mmJ////A.

"IIIIIIIIIII u u u u u v INVENTORQ $0 Bernard Rschnelder Kar K r BY MATTORNEY.

May 31, 1932- B. R. SCHNEIDER ET AL 1,851,429

MACHINE FOR INCLOSING METALLIC QOILED sPRINGS Filed May 17, 1929 5Sheets-Sheet 5 Bernard R. Schneider Patented May 31, 1932 8 UNITEDSTATES PATENT OFFICE BERNARD R. SCHNEIDER, OF LYNDHURST, AND KARLKAISER, OF RIDGEFIELD,

' l NEW JERSEY Y MACHINE FOR IN CLOSING METALLIC COILED SPRINGSApplication filed May 17,

This invention relates to machines for inclosing coiled metallicsprings; and particularly to a machine for securing such springs in asuitable covering to facilitate the assembly and the installing in themanufacture of mattressing and the like.

' An object of the invention is to provide a machine for inserting andenfolding helical'springs in a covering having the form of a strip,bearing pockets arranged side by side along its length. The pockets arepref erably wholly closed, whereby the springs are completely encased bythe strip.

Another object of the invention is to provide a covering or envelope formetallic coiled springs that is preferably a strip of cloth or otherfibrous ;mat e nial, doubled along its length to give two plies orlayers, which are secured together at regular intervals to form thepockets into which the springs are inclosed, as is more fully set forthand claimed in the co-pending application of one of us, Bernard R.Schneider, Serial N 0. 380,688, filed July 24th, 1929, and entitledStrip container for coiled springs, now U. S.. Patent #1,777,020,granted September 30th, 1930.

A further object of the invention is to provide a machine of the typeindicated with a carrier mounted and operated to receive the springs insuccession and thrust them into the pockets of said strip; the carrierbeing also arranged so that a part of it separates the two layers of theenveloping strip adjacent the mouths of the pockets, thus keeping themouths of the pockets open and ready to admit the springs when thelatter are in proper position.

A further object of the invention is to provide a holding device forpreventing displacement of the strip at the time when the springs areinserted into the pockets.

A further object of the invention is to provide a machine of the classdescribed having a gripping and retaining device which en gages thestrip just before the carrier, after having inserted a spring into thestrip, is

withdrawn; thus retaining each spring in the particular pocket Where ithas been deposited by the carrier; and allowing the car- 1929. SerialNo. 363,869.

rier to make its return stroke empty, to take up the next spring.

A further and particular object of the invention is to provide for theadvancement of a coverin strip pre-formed with partitions, extendingtransversely of the strip, the coil carrying element co-operating withthe partitions to advance the same from stage to stage upon successiveinsertion of the individual coils Within the covering strip.

A further object is to provide the machine with suitable parts by whicheach spring is efl ectively held and controlled as it is transferred tothe carrier when the latter is about to commence its working stroke.

A further object of the invention is to provide means for conveying thestrip through the machine; and means for finally closing the pockets sothat the springs therein are wholly enveloped.

Further features and objects of the invention will be more fullyunderstood from the following detail description and the accompanyingdrawings, in which Fig. 1 is a side view of a machine embodying theinvention Fig. 2 is a top plan thereof;

Fig. 3 is a detail side elevation, on an enlarged scale;

Fig. 4 is a horizontal sectional view on line 4 4 of Fig. 3.

Fig. 4a is a detail vertical elevation;

Fig. 5 is a transverse vertical section showing the spring receivingchute, and a device for gripping the cloth covering to retain a springas the carrier is withdrawn;

Fig. 6 shows the means attached to the spring receiving chute forholding and compressing the springs succesively therein, as viewed fromthe right of Fig. 6 and the rear of Fig. l;

Fig. 7 is a view similar to Fig. 5 illustrating I the carrier at thestage of inserting aspring into the covering;

Fig. 8 is a detail view showing the spring receiving chute and itsstops, the latter in release position.

Fig. 9 shows in vertical section a portion of the coveringstrip, with aspring enclosed therein;

Fig. 10 is a perspective view of a part of said strip, before a springhas beeninserted.

In the drawings the same numerals identify the same parts throughout.

The numeral 1 indicates the top of the frame of the machine, and 2 thelegs thereof. At 3 is shown a reel consisting of two disks fixed to ashaft 5 loosely mounted in the bearings 4 to afford free rotation of thereel as required for paying out the covering strip 6, wound thereon.

Before being wound on the reel 3, the strip 6 which may be of stoutcloth or'other suitable material, is doubled along its length, asillustrated in Figs. 9 and 10, to make tWo plies or layers 8 and 9.These layers, the upper 8 and the lower 9, are not attached along theirfree edges, but in the longitudinal foldmg of the strip the oppositeedges of the latter are brought into proximity. Pockets are formed sideby side between the upper layers 8 and the lower layer 9 by lines ofstitches 11, extending transversely to the length of the doubled strip.The lines of stitchings 11 do not extend to the free edges to afford anunrestricted path from one pocket to the next, for the purpose ofinserting the springs successively within the pockets, as will appearmore fully hereinafter.

Suitable means or a separate machine is provided for shaping the springsand for delivery to the top as indicated at 12. The fashioned spring isdelivered by the curved conduit 13 to the vertical chute 14. This chuteterminates just above a shelf 15 over the top l of the framework of themachine.

The strip 6 runs from the reel 3 over a guide roller 16 to the uppersurface of the shelf. The chute 14 is just a little to the rear of theshelf 15, and the latter projects at the front of the top 1. The chuteis supported by an elevated plate 17 held up by standards 18 on the top1, and secured to the standards by suitable fastening devices 19. Theupper end of the chute 14 passes through a bearing 20, see Fig. 3, inthe plate 17, and telescopes within the lower end of the elbow 13. Aclamp 21 encircles this end and the elbow may be split to. enable theclamp when it is tightened to secure the parts together. To avoid ashoulder at the upper end of the chute 14 this end may be internallybeveled or counterbored inside the conduit 13.

Coming from this conduit the springs drop down the chute 14, aretemporarily arrested and compressed to shorten them and then dischargedupon a carrier 22, see Figs-2, 4 and .7 This carrier is channel-shapedfor the greater part of its length, having side flanges 23 the upperedges of which are bent over inward along the forward half of theseflanges; the body of the carrier is a plate or block 24. Upon depositinga compressed spring between the upper inwardly bent faces of theopposite flanges 23 the spring is-held the carrier enables it to moveparallel to the strip and also transversely thereof. It receives aspring, moves parallel to the strip toward the roller 16, then towardsthe stri to insert the spring, then feeds the strip unti it comes intoline with the chute 14. It is then withdrawn leaving the spring in thestrip and is returned to its above stated first position to receiveanother spring from the chute. The carrier thus moves in a continuouspath along the'four sides of a square.

An important feature of its'movement is that its front end' is neverentirely pulled out from between the open edges of the layers 8 and 9.This feature applies particularly in the illustrated embodiment of theinvention on the return movement of the coil carrier, on which returnmovement the coil carrier is brought into adjacent relationship with thesucceeding coil to be inserted, such succeedin coil being held incompressed status by sultable means co-operating with the chute 14, asappears more fully hereinafter. Hence it can always insert the springwithout catching at the mouth of any of the pockets 10, or receiving anyadditional movement or additional means for opening any pocket when aspring is to be inserted.

To enable the gear 26 to move the carrier parallel with the strip 6, wesecure to the bottom of the'plate 24, below the rack 25 a block 28 witha recess 29 for the gear 26. At its rear end the block engages a guide30 mounted on supports 31 aflixed to the top 1 and having a beveled edgewhich is slidably received in a groove 32 in the rear of the block 28.Fastening devices 33 hold the guide in place on the posts 31. The guide30 prevents tilting of the carrier about the shaft 26 as an axis.

To operate the various parts of the machine, see Figs. 1 and 2, a shaft34 is mounted at one end of the framework below the top 1. This shaft isturned b a belt 35 engaging a pulley 36 on the sha t; and if desired,the shaft may also carry an idler pulley 37. The shaft 34 also carries adrive gear 38, engaging a gear 39 on a shaft 40, running lengthwise ofthe machine at the back thereof below the top 1. On the shaft 40, at theend remote from the gear 39, is a cam 41, for reciprocating a verticalrack 42, the cam having the form of a disk with anendless groove, notshown in its face, to receive a projection indicatedat 43 on the rack42, the groove having the necessary shape to give the desired path ofoperation. The rack passes up through an opening in the top 1, isengaged near its upper end by a guide 42a on the top, and meshes with agear 43, journalled above the top 1 and meshing with a gear 44 on theshaft 27. Hence continuous rotation of the shaft will produce reverserotation or oscillation of the shaft 27 and gear 26 upon axialreciprocation on the shaft 27 in the keyslot 52 effects reciprocation ofthe carrier 22 to move into and out of the pockets 10 and theadvancement of the covering strip in the machine. The movements of thecarrier parallel to the strip 6 are produced by a cam 45 on the shaft40, rocking a lever 46 pivoted at 47 on a part 48 at the front of theframework of the machine. This lever is attached by a link 49 to theblock 28, and a spring 50, see Fig. 3, joined to the lever and the top 1acts to keep the lower end of the lever in contact.

with the cam 45. The top 1 is recessed at 51, see Fig. 7, to enable thelink 49 and carrier to be pinned together. Rotation of the shaft 40 thusgives the carrier the movement above described in four differentdirections, from the chute 14 as a starting point, and back again.

At the lower end of the chute 14 'we mount one or more pivoted stops 53having angular free ends 53aextending toward one another, see Figs. 7and 8, to arrest each spring as it drops into the tube from the elbow13, see Figs. 3 to 6. The chute is recessed at 54 adjacent each stop toallow the stop to project into it. Between the notches or recesses 54the chute has slots 55 to afford entry of the ends of compressor arms ormembers 56. These arms are moved up and down by a vertical shaft 57, seeFigs. 1 and 3, which can oscillate so that the actuation of this shaftcan cause the arms 56 to be swung so that their lower ends pass into thechute through the slots 55. The shaft 57 has a bearing 57a in the top 1,and may be engaged in another bearing in the part 17 above the top, withfixed collars on the shaft above and below the plate 17 to preventlongitudinal movement of shaft 57. At its lower end it carries an arm58, attached by a spring 59 to a crossbar 60 on two of the front legs 2,see Fig. 1. The spring draws the arm 58 against the periphery of a cam61 on the shaft 40. carries a peripheral projection toswing the arm 58out against the force of the spring and oscillate the shaft 57 about itsaxis.

On the shaft 57 above the top 1 is a head 62, having a neck or bearing63. This head is loose on the shaft 57, and has bearings at the sidesfor spindles 64, on one end of which the arms 56 are fixed, see Figs. 1,3,4a, 5 and 6. The spindles 64 also carry gear segments 65 to unite themat the other end, so that these spindles must rock in unison, andadjacent the arms 56 the spindles carry conical rollers The cam 61 66 tomake contact with the outside of the chute and prevent Just above thehead 62 the shaft 57 carries a cam 67 with a groove 68, this cam beingkeyed to the shaft and slidable thereon as shown at 69. One of the gearsegments 65 has an arm rotation of the head 62.

70 with a projection 71 engaging the cam groove 68.

We show the stops 53 aflixed to spindles 72, at right angles to thespindles 64, and these spindles are united at one end by meshing I gearsegments 73, see Figs. 6 and 8. A spring 74 is aflixed to one of thesesegments and to a projection 7 4?) on the outer face of the plate 17,above the stops 53, and normally tensions one of the segments 73upwardly against the stop 74a, to normally position the ends 53a of thestops in the recesses 54, as shown in Fig. 6. On the side of the head 62is an arm 75 with an adjustable screw 76, in line with p one of thesegments 73. The bearings for the spindles 72 on the chute 14 areindicated at 77 (Fig. 4). The downward movement of the head 62carriesthe screw 76 against one of the segments 73, to throw the stops 53outward, to thereby release the coil spring theretofore positionedand-compressed by the cooperation of the stops 53 and compressing arms56 proximate the end of the chute, upon the return movement of thecarrier 22, in which return movement such compressed spring is embracedbetween the opposite flanges 23 and the bottom plate 24 of the carrier22.

Aflixed to the head 62 and neck 63 is a rack bar 78, see

Figsx3, 4, 6 and 8, that is engaged by a pinion 79 on a transverse shaft80. This pinion 79 is near the front of the machine, and at the back,the shaft 80 carries a gear 81, meshing with a vertical rack bar 82.This bar has a guide 83, and passes down through the guide and the top1, and carries at its lower end a projection 84 which is received in anendless groove, not shown, in the face of the cam 61. Rotation of thiscam will thus raise and lower the head 62. and at the same timeoscillate the shaft 57. The rack bar 82 is at the rear edge of the top1, while the shaft 57 is towards the front, but the same cam 61 actuatesboth.

The operation here is such that when a spring 7 drops down the chute 14,the stops 53 arrest it because their ends 53a projects into the recesses54, see Fig. 6. At this time the arms 56 are in the position shown inFig.

5. The cam 61 now operates the arm 58 to turn the shaft 57 in the head62 and make the cam 67 actuate the gear segments 65 to turn swing thearms 56 in the spindles 64 and through the slots 55. At this time thehead 62 is held against turning by the rollers 66' overlap it.

cam 61 lowers the rack 82, and acts through gear 81, shaft 80 and gear79 to lower the rack 78 and bring down the head 62. At the end of itsdownward movement, the screw 76 strikes one of the segments 73 tooperate the spindles 72 to withdraw the stops 53. The arms 56 can thencause the spring to be delivered to the carrier22. At this instant thecarrier is in the position shown in Fig. 7, inserting one spring into apocket 10, and with the overturned edges 23 of its flanges 22 forward ofthe chute, so that on the next movement of the carrier, towards therear, the arms 56 hold the spring against the bottom plate 24 of thecarrier 22 until the edges 23 Then the head 62 can be moved upward tolift the arms 56, but the spring remains on the carrier by engagementwithin the flanges 23 therewith. The cam 67 of course moves up and downwith the head 62, being keyed to slide on the shaft 57.

On the shelf 15 are suitable means, see Figs. 1, 2 and 3, to hold thestrip 6 against displacement whenever, a spring 7 is inserted. Spacedrollers 85 are mounted on this shelf, and are disposed in recesses, sothat they engage the under side of the strip 6 in advance of the chute14. Cooperating with these rollers are rollers 86 on arms 87. These armsare aflixed to a spindle 88 at the front of the shelf 15, supported inbearings 89. Afiixed to this spindle is an arm 90, attached to a rod 92.A spring 91 joined to the arm 90 and the shelf 15, tends to keep thelever 87 and rollers 86 raised and the rod 92 is actuated by a cam 93 onthe shaft 40. This cam also has an endless groove, not shown, in oneface, of such shape that it receives a projection 94 on the rod 92, andlifts this rod at the right instant to lower the levers 87. Said leversare dropped when the carrier commences to thrust a spring into one ofthe pockets 10.

We further provide a retaining device to keep the spring in the pocketthat has received it when the carrier is withdrawn, see Figs. 2, 4 and5. At 95 is an upper-jaw with a shank 96, pinnedto a bell crank lever97. The pin is shown at 98. A similar shank 96 carries a lower jaw 100and a similar bell crank is pivoted to a similar shank on this lowerjaw. The two bell cranks have gear teeth 99 at the end of one arm toconnect them and make them move together. They are mounted betweenbrackets 102, on pivots 103. The jaw 95 has a projection 101 with amilled end, and the jaw 100 has a similar milled surface 101a. The twojaws are brought together to hold the spring 7 compacted when thecarrier is drawn back out of each pocket 10, and'at-the-same time thetwo milled or roughened surfaces 101 and 101a pinch the closed edge ofthe strip between them and hold it fast. The bracket-s or plate 102 areunited at the rear by cross bars or plates 104, which back up the shanks96 and serve as guides in the up and down movement thereof. The lowerbell crank has a rigid arm 105, pinned to a rod 106 operated by a cam107 on the shaft 40. This cam has an endless groove, not shown, in oneface, receiving a projection 108 on the link 106, the groove beingshaped to cause the jaws 96 and 101 to operate as required. Plates orbrackets 102 are secured to the top 1 at the lower ends and one is fastat its upper end to the shaft 15, while the other is secured at itsupperend to the .end of a channel 109 in line with the shelf 15, seeFig. 3.

After the carrier is withdrawn, each spring may expand somewhat in itspocket 16, and the strip with the springs therein is drawn towards theend of the machine remote from the belt 35. The other end of the channel109 may be supported in any suitable way and in line with this channelis a second channel 110, see Figs. 1 and 3. Above the channel 110 is aplate 111, extending lengthwise thereof, and mounted on posts 112secured to the top 1. The strip runs fromthe channel 109 into thechannel 110, beneath the bar 111, and beneath this bar runs a conveyorbelt 113, mounted on pulleys 114. The pulleys are rotatably carried insupports 115 affixed.

to the sides of the bar 111, or mounted in any other feasible manner.Similar supports 118 which may be attached to the plates 115 carry thejournals or shafts for a pair of pulleys 116, over which runs a belt117. The upper part of this belt runs on the bottom of the channel 110.One pulley 116 is rigid with a grooved wheel 124 mounted on the sameshaft therewith; and this wheel is driven by a bevel gear 119 on theshaft 40, engaging a bevel gear on a shaft 120 in a bearing 121 on thecrossbar 60. The shaft 120 carries a grooved pulley 122, connected tothe grooved edge of the wheel 125 by a belt 123. The shaft 126 carryingthe grooved wheel 118 and pulley 116 may be extended and bear at itsopposite end a hand wheel 127.

The belt 123 draws the strip with the enclosed springs through thechannels 109 and 110; Passing under the plates 111, the springs arecompressed slightly, and the belt 113 moves with the strip, the lowerside of this belt preventing friction between the plate 111 and thestrip. The handwheel 127 allows the belt 117 to be moved independentlyof the driving pulley 124. Whenthis wheel is rotated the pulley 124 iscaused to slip within the belt 123.

Beyond the belts 113 and 117 is a. compres sor' frame 128. It is mountedon posts 129 on the top 1 and comprises a pair of straight lower bars, apair of belt upper bars, one upper and one lower bar being at each sideof the strip. The upper and lower bars of the frame 128 converge towardsa'sewing ma.- chine. or similar fastening apparatus 13. The upper barsand lower bars carry transverse rollers 130 between which the strip 6travels. The apparatus 131 is operated by a motor 132, connected by a.belt 133 to a pulley 134 on the apparatus 131. This machine stitches upthe open mouths of the pockets 10. The frame acts to compress thesprings 7 in the'strip, the rear ends of the upper bars extending alittle past the sewing device for this purpose, while the lower barsterminate just in front of the apparatus 131. The open edges of thepockets project a little to one side of the frame 128 so that they caneasily be E mrked by this apparatus 131 as indicated in In operation,each spring as it drops down the chute 14 is arrested and compacted. Itis delivered to the carrier 22, and passes under the edges 23, as thecarrier moves back. The carrier now moves to the right, as viewed inFig. 1, its front :end keeping between the edges 8 and 9. Next it entersa pocket, the holding device comprising rollers 86 engaging the strip 6to prevent displacement. Moving to the left, the carrier comes adjacentthe gripping and retaining device, whose jaws 95 and 101 hold the clothand inserted spring as the carrier is'withdrawn and moved to itsposition relative to the chute for receiving another spring, andrepeating these movements as often as required. The feeding of the stripand the springs enclosed in the pockets to the succeeding parts of themachine is efl'ected by the intermittent movement of the carrier 22while positioned in a pocket and moved by its actuating mechanism abovethe shelf 15. The strip with the inclosed springs, as itcomes from themachine, can be cut anywhere between the pockets to the desired length,and used for mattresses, cushions, seats, etc., in the making ofmattressing furniture and the like.

A suitable retarding device to prevent too rapid unwinding of the reel 3may be added if desired.

The various cams on the shaft 40 of course operate in the order and forthe extents of movement required for the various parts to which they areconnected.

It will be understood that the carrier 22 and its associated mechanismmay be operated by power applied manually. It will also be understoodthat the feeding of the strip may be effected by suitable mechanismindependently but synchronously relative to the movement of the carrier22. The springs may be inserted manually and the strip fed by the belts117, 123.

While preferred embodiments of our invention are set forth. we may ofcourse resort to other constructions without going beyond the spirit ofthe invention, and we desire the appended claims to be construed tocover our 1 invention in its broadest aspects.

VVe claim '1. A machine for incloslng c011 springs within a coveringstrip comprising means for supplying a covering strip to the machine,and a carrying member for carrying the springs successively intoposition to be enveloped by said strip and for advancing the coveringstrip within the machine.

2. A machine for inclosing coil springs comprising means for supplying acovering strip of two layers to saidmachine, a carrier for inserting thesprings between said layers, and means for actuating the carrier so thatit separates said layers at one side of the strip to make way for saidsprings.

3. A machine for inclosing coil springs comprising means for supplylng acovering strip to said machine, a carrier to bear the springs intoposition to be enveloped by said strip and for advancing the coveringstrip within the machine, and means for engaging the strip andpreventing displacement when the springs are delivered to the strip bysaid carrier.

4. A machine for inclosing coil springs comprising means for supplying acovering strip to said machine, a carrier to bear the springs intoposition to be enveloped by said strip and means for gripping the stripand for advancing the covering strip within the machine and retainingeach spring as the carrier is Withdrawn.

5. A machine for inclosing springs com prising a chute to receive thesprings, stop means for engaging each spring in turn, means for engagingeach spring and compress it while it is held by saidstop means, andcarrier means receiving each spring in compressed status and serving tobear it into position to be enveloped by a covering strip.

6; A machine for inclosing springs comprising a chute to receive thesprings, said chute being slotted, stop means adjacent the slot of saidchute, means disposed to project through the slot into the chute andcompress each spring in turn against the stop means, and carrier meansreceiving each spring in compressed status and serving to bear it intoposition to be enveloped by a covering strip.

7. A machine for inclosing springs comprising a chute to receive thesprings, stop means for springs, means for compressing each spring inturn against said stop means, means for causing the springs to bereleased by said stop means to be-delivered by said chute, and carriermeans receiving each spring in compressed status and serving to bear itinto position to be enveloped by a covering strip.

8. The machine according to claim 7 .Wherein said spring releasing meansare mounted on said spring compressing means. 9. In a machine forinclosing springs, a

-carrier which is channel-shaped with a portion of its opposite sidesbent towards each other to provide inwardly projecting flanges to retaina spring in compressed status in the carrier, means including a fixedhousing for compressing and positioning a spring in within said housingand for positioning the spring in compressed status within said inwardlyprojecting flanges.

10. In a machine for inclosing springs the combination of a carrier, arack attached to the carrier, a shaft provided with a key-slot extendingaxially thereof, a gear keyed to said shaft in said key-slot, and meansfor oscillating the shaft and shifting the gear and carrierlongitudinally of the shaft to move the carrier transversely and axiallyof the shaft.

11. A machine for inclosing springs comprising a chute having aplurality of slots therein, stops movably mounted adjacent the chute, acompressing arm movably mounted outside of said chute and adjacent eachslot and spaced from the stops, means for yieldably holding each stop inoperative position, means for actuating each arm to project it throughthe adjacent slot to engage a spring in the chute, and means for holdingand moving each arm to cause the spring to be forced against each stopand thereby compress the spring.

12. The machine according to claim 11, wherein the means for projectingeach arm through the adjacent slot includes a cam, and the means forbodily moving each arm includes a toothed rack to shift said arm.

13. A machine for inclosing springs in a covering strip, comprisingmovable means for carrying springs in compressed status to said stripand for advancing said strip in the machine, a delivery channel and aconveyor for moving the strip enveloped thereby along the channel.

1 A machine for inclosing springs ina covering strip comprising springcarrier means for carrying springs successively into position to bereceived by said strip and for, advancing said strip in the machine, adelivery channel, a conveyor to carry the strip through said channel,and an endless band above the channel to engage the strip containing thesprings as they are moved with the strip in said channel.

15. A machine for inclosing springs in a covering strip comprising twolayers between which the springs are inserted, a compression framethrough which the strip and the springs are passed said framehavingmutually approaching faces for engaging the strip to therebycompress the springs inclosed within said strip upon movement of thestrip in said frame, and adevice at one end of said frame to secure saidlayers together.

65 16. A machine for inclosing springs in a covering strip comprisingtwo layers, means for inserting springs side by side between saidlayers, means for conveying the strip and springs therein out of saidmachine, a compressing frame having converging bars and transverserollers supported by the bars, the strip with the springs passingbetween said rollers and means for securing said layers as the stripissues from the compression frame.

17. A machine for inclosing springs comprising means for receiving astrip serving to inclose springs, spring carrier means for carrying thesprings into position to be received by the strip, and for advancing the80 strip, pivoted arms having rollers, and means for moving the arms tocause the rollers to engage the strip and prevent displacement when thestrip receives the springs.

18. A machine for inclosing springs comprising means for receiving astrip to cover the springs, spring carrier means for carrying thesprings into position to be received by the strip, and for advancing thestrip jaws for retaining the springs, bell-crank levers carrying saidjaws and having gearteeth connecting one lever to the other and an armto actuate said levers.

19. A machine for encasing springs comprising a slotted chute to receivesaid springs, stop means adjacent the end of the chute, compressor armsat the sides of the chute. a head carrying said'arms, a shaft on whichthe head is mounted for movement lengthwise of the shaft, a rackattached to thehead, 100 a gear to actuate the rack to impart saidmovement to the head through the rack, gear segments connecting saidarms, and a cam on the shaft to cause said segments to move to projectthe arms into the slotted chute, said 1 shaft being rotatable to operatethe cam.

20. A machine for inclosing springs in a strip provided with pockets,means for slidingly supporting the strip for the insertion of thesprings, spring carrier means for carrying the springs within thepockets of the strip and for advancing the strip, and means for sewingthe strip to fully inclose the springs in said pockets.

21. A machine for inclosing springs in a strip folded, upon itself andsewed along a line of stitchings to provide pockets, said line ofstitchings terminating at a spacing from the open side of the pockets,means for inserting springs in said pockets, said inserting means havinga part traversing said 5 acing. and means for inclosing the open en s ofsaid pockets.

22. A machine for inclosing springs in a strip provided with pockets,means for slidingly supporting said strip, spring carrier means forinserting springs in compressed status individually in the pockets ofthe strip and fof advancing the strip in the machine, and means forcompacting and holding the inserted springs in compacted condi-- ntestimon whereof we have signed this specification t is 26th day ofApril, 1929.

BERNARD R. SCHNEIDER. KARL KAISER?

